Table 1-21,,,,,,,,,
U.S. Airport Runway Pavement Conditions,,,,,,,,,
,1986,1990,1993,1997,1999,,,,
"NPIASa airports, total","3,243","3,285","3,294","3,331","3,344",,,,
Condition (%),,,,,,,,,
  Good,61,61,68,72,72,,,,
  Fair,28,29,25,23,23,,,,
  Poor,11,10,7,5,5,,,,
,,,,,,,,,
Commercial service ,,,,,,,,,
"   airports,b total",550,568,554,566,547,,,,
Condition (%),,,,,,,,,
  Good,78,78,79,79,78,,,,
  Fair,15,17,18,19,20,,,,
  Poor,7,5,3,2,22,,,,
"a  The U.S. Department of Transportation, Federal Aviation Administration's (FAA's) National Plan of  ",,,,,,,,,
"Integrated Airport Systems is composed of all commercial service airports, all reliever airports, and ",,,,,,,,,
"selected general aviation airports. It does not include over 1,000 publicly owned public-use ",,,,,,,,,
"landing areas, privately owned public-use airports, and other civil landing areas not open to ",,,,,,,,,
the general public.  NPIAS airports account for 100% of all enplanements and serve 91.5% ,,,,,,,,,
"of all aircraft (based on an estimated fleet of 200,000 aircraft). In 1997, there were 14,961",,,,,,,,,
non-NPIAS airports. See table 1-2 for more detail on airports.,,,,,,,,,
b  Commercial service airports are defined as public airports receiving scheduled passenger ,,,,,,,,,
"service, and having at least 2,500 enplaned passengers per year.",,,,,,,,,
,,,,,,,,,
KEY: NPIAS = National Plan of Integrated Airport Systems.,,,,,,,,,
,,,,,,,,,
NOTES:  Data are as of January 1 of each year. Runway pavement condition is classified by the FAA as follows:,,,,,,,,,
Good:   All cracks and joints are sealed.,,,,,,,,,
"Fair:      Mild surface cracking, unsealed joints, and slab edge spalling.",,,,,,,,,
"Poor:    Large open cracks, surface and edge spalling, vegetation growing through cracks ",,,,,,,,,
and joints.,,,,,,,,,
,,,,,,,,,
SOURCES:,,,,,,,,,
Condition (%):,,,,,,,,,
"1986-90:  U.S. Department of Transportation, Federal Aviation Administration, National Plan of Integrated Airport  ",,,,,,,,,
Systems (Washington DC:1991).,,,,,,,,,
"1993:  Ibid., National Plan of Integrated Airport Systems (Washington DC: 1995).",,,,,,,,,
"1997:  Ibid.,  Office of Airport Planning and Programming, National Planning Division, personal communication, 1997.",,,,,,,,,
"1999:  Ibid.,  Office of Airport Planning and Programming, National Planning Division, personal communication, 2000.",,,,,,,,,
Total number of airports:,,,,,,,,,
"1986-99:  U.S. Department of Transportation, Federal Aviation Administration, Office of Airport Planning and Programming,",,,,,,,,,
"National Planning Division, personal communication, June 23, 2000.",,,,,,,,,